Table 1.

Pressure and pressure frequencies from a 10Fr sheath in the thorax and pericardial space after epicardial ventricular tachycardia ablation in 20 patients

Patient no.	Prior sternotomy	Thorax pressure (mmHg)	Thorax pressure frequency peak (Hz)	Pericardial pressure (mmHg)	Heart rate (bpm)	Pericardial pressure frequency peaks (Hz)
1	No	8.2	0.21	8	60	0.20, 1.0
2	Yes	7.7	0.22	8	65	0.20, 1.1
3	No	8.1	0.21	8	90	0.21, 1.5
4	No	11.0	0.18	8	60	0.18, 1.0
5	No	8.1	0.19	7	90	0.19, 1.4
6	No	8.0	0.20	7	60	0.20, 1.0
7	No	4.1	0.21	7	60	0.21, 1.0
8	No	7.2	0.20	8	70	0.20, 1.2
9	No	8.2	0.20	7	65	0.22, 1.1
10	No	8.1	0.21	8	60	0.21, 1.0
11	No	6.3	0.22	8	60	0.22, 1.0
12	Yes	7.1	0.18	5	60	0.18, 1.0
13	No	11.0	0.20	10	50	0.20, 0.8
14	No	8.0	0.19	8	65	0.19, 1.1
15	No	8.1	0.18	8	70	0.18, 1.2
16	No	4.0	0.18	8	90	0.18, 1.4
17	No	8.0	0.20	8	60	0.20, 1.0
18	Yes	5.2	0.20	8	90	0.20, 1.4
19	Yes	7.2	0.18	8	90	0.18, 1.5
20	No	10.1	0.20	8	90	0.20, 1.5